Mechanism for making flanged spools



"March 19, 1929. v A, c, opxms 1,706,118

MECHANISM FOR MAKING FLANGED SPOOLS Original Filed April 18, 1924 77 12% J76 12 11 I 17-22 12 I 1! ]5' I I T i 1! J0 J6 14 20. Q

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Patented Mar. 19, 1929..

UNITED STATES PATENT OFFICE.

An'rHrrn. c. norms, or NrLE's, MICHIGAN, ASSIGNOR T0 NATIONAL STANDARD coir- PANY, or NILES, MICHIGAN, A CORPORATION or MICHIGAN.

MECHANISM FOR MAKING FLAN GED SPOOLS.

hriginal application filed April 18, 1924, Serial No. 707,393. Divided 81, 1927. Serial No. 179,874.

This invention relates to spools particularly such as are used 'in wire braiding machines, and to mechanism for making the same, and is fully described in the follow- 5 ing specification and shown in the accompanying drawings, in which:

Figure 1 is a longitudinal section through a spool showing the dies and tools for forming the same; p

Fig. 2 is a plan view partly in section showing the means for supporting the tube during the pressing operation;

Fig. 3 is a longitudinal section through a completed spool; and

-Fig. 4 is an end view of the same.

This is a division of my pending application Serial No. 707,393, filed April 18, 1924.

The embodiment of the invention illustrated comprises a spool as shown in Figs. 3 and 4 having a tube 10 having reduced ends 11 which extend through the end plates 12 and which are riveted or spun over at 13.

. in assembling, the tube 10 is held between I clamping members 14 and 15 which are reducedto closely fit the tube, the. members being secured upon the tube by means of a wedge 16; The members 14 and 15 are slightly shorter than the distance between the shoulders on the original tube as shown by Fig. 1 and act as stop means for limiting the distance the plates 12 are pressed in as will later be explained.

The end adapted to fit over the ends 11 of the tube and are countersunk at 12 on the outside to receive the riveted over ends 13 of the tube. With the end plates assembled on the reduced ends of the tube and the clamping members 14 and 15 in place as shown, the spool is placed between dies 17 and 18 which have centers 17 and 18 which extend into the ends of the tube and curved annular portions 17 and 18 for rounding the ends of the tube and forcing them back into the countersunk portions 12 as the dies are forced inwardly, thereby having these ends flush with the outer faces of the end plates.

As the outer ends of the tube 10 are forced outwardly they cause an outward dishing of the end plates 12 and as the dies 17 and 18 continue to more inwardly they encounter the dished plates 12 and force them back plates 12 have central openings.

and this application filed March toward the members 14 and 15, thereby causing them to resume their fiat shape.

At the same time the tube is shortened by the heavy pressure of the dies but is pre- Vented from buckling by the members 14 and 15 which also serve to limit the inward movement of the plates 12, the outer edges of which are held between these members and the annular shoulders 17 and 18 of the members 17 and 18.

After the pressing operation, the dies 17 and 18 are removed, the wedge 16 is withdrawn and It will be noted that the inner ends of the tube 10 are outwardly rounded and this assists in pressing therein a core 19 of wood or the like, which is slightly larger than the internal diameter of the tube 10, as shown in Fig. 3, so that after being pressed in the core is so firml held that it will not loosen even when SIlbJBCtBd'tO oil for long periods.

While l have shown and described but a single embodiment of my invention, it is to be understood that it is capable of many modifications. construction and arrangement may be made without departing from the spirit and scope of the invention as disclosed in the appended claims, in which it is my intention to claim all novelty inherent in my invention astbroadly as possible in view of the prior ar I claim:

1. Mechanism for forated end plates on shouldered tubes to form spools, said mechanism comprising means for supporting the tube to prevent it from buckling under end pressure, and dies for forcing the ends of the tubes outwardly against the end plates, said means comprising a U-shaped body having an opening in one side terminating in a semicyl-indrical portion, a member adapted to lit in said opening and having a semicylindrical portion facing the first mentioned semicylindrical portion, and means for forcing said body and member toward each other to hold a tube between said semicylindrical portions.

2. Mechanism for pressing centrally perforated end plates shouiderei tubes to form spoois, mechanism comprising the members 14 and 15 removed. I

Changes therefore in the pressing centrally per- I means for supporting the tube to prevent it from buckling under end pressure, dies for forcing the ends of the tubes outwardly against the end plates, said means comprisinga U-shaped body having an opening in one side terminating in a semicylindrical portion, a member adapted to fit in said opening and having a semicylindrical portion facing the first mentioned semicylindrical portion, and a wedge for forcing said 1 body and member toward each other to hold a tube between said semicylindrical portions. In testimony whereof I have hereunto set my hand and seal this 28th day of March,

ARTHUR G. .HOPKINS. 

